Home / 485,056,987.20-727,591,701.60-161,940,859.20

Finding the Fourth Proportional to 485,056,987.20, 727,591,701.60 and 161,940,859.20

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Solution

The fourth proportional to 485,056,987.20, 727,591,701.60 and 161,940,859.20 is: 242,913,365.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,056,987.20 : 727,591,701.60 = 161,940,859.20 : x
  2. Step 2: Convert to fraction form
    485,056,987.20/727,591,701.60 = 161,940,859.20/x
  3. Step 3: Cross multiply
    485,056,987.20x = 727,591,701.60 × 161,940,859.20
  4. Step 4: Simplify right side
    485,056,987.20x = 117,826,825,303,894,016
  5. Step 5: Solve for x
    x = 117,826,825,303,894,016/485,056,987.20
  6. Step 6: Final answer
    x = 242,913,365.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.